Plectocarpon Fée (1825)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Scholz P. (06-06-12; 06-08-07) and Tehler A. (27-11-95); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 14. Plectocarpon. Genus of unknown placement (incertae sedis); Arthoniales.

Type Information: Type: Plectocarpon pseudosticta (Fée) Fée.

Taxonomic Literature: Aptroot A., Diederich P., Sérusiaux E. & Sipman H.J.M.,
Biblioth. Lichenol. 62: 1-220 [137-140] (1997); Cáceres M.E.
da S., Diederich P., Lücking R. & Sérusiaux E.,
Lichenologist 33(6): 503-506 (2001); Diederich P. & Etayo J.,
Nordic J. Bot. 14: 589-600 (1994); Ertz D., Christnach C., Wedin M.
& Diederich P., Biblioth. Lichenol. 91: 1-155 (2005); Ertz D.,
Zhurbenko M.P., Diederich P. & Miądlikowska J., Bryologist
106(3): 465-467 (2003); Follmann G. & Werner B.C., J. Hattori
Bot. Lab. 94: 261-292 (2003); Hafellner J., Triebel D., Ryan B.D.
& Nash T.H., Mycotaxon 84: 293-329 (2002); Hawksworth D.L., Bull.
Brit. Mus. (Nat. Hist.), Bot. 9(1): 1-98 [73] (1981) - sub
Lichenomyces lichenum; Hawksworth D.L. & Galloway D.L.,
Lichenologist 16: 85-98 (1984); Keissler K. von, Rabenh. Kryptog.-Fl.
8: 1-712 [89-91, 303-304] (1930) - sub Celidium lichenum, sub
Telimena; Müller E., Sydowia 27: 74-77 (1975); Nylander W.,
Flora 59: 231-239 (1876); Petrak F., Ann. Naturhist. Mus. Wien 50:
414-521 [470] (1940) - sub Telimena encaustica; Santesson R., Svensk
Bot. Tidskr. 54: 499-522 [501-503] (1960); Santesson R., The lichens
and lichenicolous fungi of Sweden and Norway, Lund: 1-240 [171]
(1993); Santesson R., Thunbergia 21: 1-18 [9] (1994); Vouaux L.,
Bull. Trimestriel Soc. Mycol. France 28: 177-256 (1912) - sub
Homostegia encaustica; Wedin M. & Hafellner J., Lichenologist 30:
59-91 [86-87] (1998).

Biogeography: Checklist records: Austria, Germany, Great Britain, New Guinea, New Zealand, Sweden and Norway, and United States and Canada (continental).

Ecology: Biotroph; lichenicolous; terricolous or corticolous; substrate non-calciferous.

Lichen Photobionts: Primary photobiont absent. Secondary photobiont absent.

Thallus: Indistinct.

Medulla: Iodine reaction in Lugol's solution positive; not different with or without KOH pre-treatment (euamyloid).

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid or perithecioid, orbicular, irregular, or linear, not emerging, becoming adnate, stromatic. Margin: External filaments absent. Exciple: White, black, red, or brown. Periphyses: Absent. Epithecium: Apical cells green, olive, brownish yellow, or brown. Hymenium: Iodine reaction: Lugol’s positive, hemiamyloid. Interascal Hyphae: Present, scarcely branched to distinctly branched, not or scarcely anastomosed to distinctly anastomosed. Hypothecium: White, black, green, olive, brownish yellow, or brown.

Asci: Tholus thickened, not amyloid or amyloid, with amyloid tube; dehiscence bitunicate; exoascus not amyloid, hemiamyloid.

Ascospores: 1–2 to c. 8 per ascus, ellipsoid, oblong-obtuse, oblong, fusiform, filiform, or curved, 15.5-38 µm long, 3-9 µm wide, obtuse or aciculate; septa present; transversally septate, 1-6-transversally septate; wall thin or thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline or pale brown, in Lugol's Solution negative, wall not ornamented or ornamented.

Conidiomata: Absent resp. not observed or present; pycnidial; immersed.

Conidiogeneous Cells: Apical. Conidia: Bacilliform or filiform.

Secondary Metabolites: Not detected.

(report generated 04.Okt.2007)